pl23_theb1828.jpg
Description
Rodman holding rod steady for observations.Bench mark as seen from highway.Level party of Gilbert C. Mast
Credit
C&GS; Season's Report Mast 1944
Display Date
1944
Location
Glenn Highway, Alaska
Category
Historic Coast & Geodetic Survey
Geodesy
Determining the Elevations - Leveling a Continent
Keywords
Geodesy
Leveling